{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Chemical"], "input": "Histopathological changes were more severe and diverse in groups 80 and 100 mg kg ( - 1 ) day ( - 1 ) , and the least significant change was observed in groups 40 and 60 mg kg ( - 1 ) day ( - 1 ) ."}
{"Chemical": []}